title> Chapter 3: Right-of-Way Improvement Requirements
Skip Navigation to ContentSeattle Right-of-Way Improvement Manual SDOT Home
HomeSearch TipsJoin Email ListGlossaryLinksContact UsFAQsdisclaimer

This online manual has been superceded by Street Illustrated.

Chapter 3
  « Back to Chapter 2  |  Go to Chapter 4 »
Right-of-Way Improvement Requirements
3.1.3c Alleys, New Alleys - Required Widths
« Back to Previous Page

Right-of-Way and Pavement Width of New Alleys

Land Use Zone Categories Width
SF, LDT, L1, NC1 12 feet
L2, L3, NC2 16 feet
MR, HR, NC3, C1, C2, IC, IB, IG1, IG2, All Downtown Zones 20 feet

Note: When an alley abuts lots in more than one land use zone category, the zone category with the most frontage on that block along both sides of the alley, excluding property zoned SF, LDT, L1, and NC1, determines the required alley width. If the categories have equal frontage, the one with the greater width requirement shall be used to determine the alley width.

Latest Online Manual
Detailed Table of Contents
Chapter 3
Right-of-Way Improvement Requirements
3.1 Overview of Requirements from the Land Use Code (Ch. 23.53 & 23.22)
3.2 Requirements for Streets, Alleys and Easements
3.3 Contact Information
Report ROWIM content errors and/or website problems Report ROWIM content errors and/or website problems
Download Adobe Acrobat Reader Download Adobe Acrobat Reader


End of Content
Home | Search Tips | Join Email List | Glossary | Links | Contact Us | FAQs
SDOT Home | Seattle.Gov